Part 51

Ad`i*po*lyt"ic (?), a. [L. adeps, adipis, fat + Gr. &?; to loose.] (Chem.) Hydrolyzing fats; converting neutral fats into glycerin and free fatty acids, esp. by the action of an enzyme; as, adipolytic action.

||Ad`i*po"ma (?), n.; L. pl. -mata (#). [NL. See Adipose; -oma.] (Med.) A mass of fat found internally; also, a fatty tumor. -- Ad`i*pom"a*tous (&?;), a.

Ad"i*pose` (?), n. (Physiol.) The fat present in the cells of adipose tissue, composed mainly of varying mixtures of tripalmitin, tristearin, and triolein. It solidifies after death.

{ Adjusting plane or surface. } (Aëronautics) A small plane or surface, usually capable of adjustment but not of manipulation, for preserving lateral balance in an aëroplane or flying machine.

Ad*mit"tance, n. (Elec.) The reciprocal of impedance.

||A*do"be (?), n. 1. Earth from which unburnt bricks are made. [Western U. S.]

2. (Geol.) Alluvial and playa clays of desert and arid regions, differing from ordinary clays of humid regions in containing carbonates and other soluble minerals.

||Ad`o*na"i (?), n. [Heb. adni, lit., my lord.] A Hebrew name for God, usually translated in the Old Testament by the word "Lord".

The later Jews used its vowel points to fill out the tetragrammaton Yhvh, or Ihvh, "the incommunicable name," and in reading substituted "Adonai".

Ad*re"nal*ine (?), n. Also Ad*re"nal*in (&?;). (Physiol. Chem.) A crystalline substance, C9H13O3N, obtained from suprarenal extract, of which it is regarded as the active principle. It is used in medicine as a stimulant and hemostatic.

Ad*su"ki bean (?). [Jap. adzuki.] A cultivated variety of the Asiatic gram, now introduced into the United States.

Ad"u*rol (?), n. (Photog.) Either of two compounds, a chlorine derivative and bromine derivative, of hydroquinone, used as developers.

Ad*van"cing edge. (Aëronautics) The front edge (in direction of motion) of a supporting surface; -- contr. with following edge, which is the rear edge.

Ad*van"cing sur"face. (Aëronautics) The first of two or more surfaces arranged in tandem; -- contr. with following surface, which is the rear surface.

Æ*ol"ic, a. [L. Aeolus, Gr. &?;, name of the god of the winds.] (Phys. Geog.) Pertaining to, caused by, or designating, the action of the wind in modifying the earth's surface; as, æolic erosion; æolic sand. [Written also eolic.]

A"ër*a`tor (?), n. That which supplies with air or gas; specif.: (a) An apparatus used for charging mineral waters with gas and in making soda water. (b) A fumigator used to bleach grain, destroying fungi and insects.

{ A"ër*en`chym (?), ||A`ër*en"chy*ma (?) }, n. [NL. aërenchyma. See Aëro-; Enchyma.] (Bot.) A secondary respiratory tissue or modified periderm, found in many aquatic plants and distinguished by the large intercellular spaces.

A*ë`ri*al rail"way`. (a) A stretched wire or rope elevated above the ground and forming a way along which a trolley may travel, for conveying a load suspended from the trolley. (b) An elevated cableway.

A*ë"ri*al sick"ness. A sickness felt by aëronauts due to high speed of flights and rapidity in changing altitudes, combining some symptoms of mountain sickness and some of seasickness.

A"ër*o (?), n. An aëroplane, airship, or the like. [Colloq.]

A`ër*o"bic (?), a. (Biol.) Growing or thriving only in the presence of oxygen; also, pertaining to, or induced by, aërobies; as, aërobic fermentation. -- A`ër*o"bic*al*ly (#), adv.

A"ër*o*boat` (?), n. [Aëro- + boat.] A form of hydro- aëroplane; a flying boat.

A"ër*o*bus` (?), n. [Aëro- + bus.] An aëroplane or airship designed to carry passengers.

A"ër*o*club` (?), n. [Aëro- + club.] A club or association of persons interested in aëronautics.

A"ër*o*curve` (?), n. [Aëro- + curve.] (Aëronautics) A modification of the aëroplane, having curved surfaces, the advantages of which were first demonstrated by Lilienthal.

A`ë*ro*do*net"ics (?), n. [Aëro- + Gr. &?; shaken, &?; to shake.] (Aëronautics) The science of gliding and soaring flight.

A"ë*ro*drome` (?), n. [Aëro- + Gr. &?; a running.] (Aëronautics) (a) A shed for housing an airship or aëroplane. (b) A ground or field, esp. one equipped with housing and other facilities, used for flying purposes. -- A`ër*o*drom"ic (#), a.

A"ër*o*foil` (?), n. [Aëro- + foil.] A plane or arched surface for sustaining bodies by its movement through the air; a spread wing, as of a bird.